102 



CRUClFERiE. (mustard FAMILY.) 



segments of leaves 2-4, small, terminal cordate-orbicular — Spring — 

 Mountains of Galilee. Samaria, Moab, and Gilead. 



4. C filiformis, Jacq. @ to If. .3 to .4, sparingly papillose- 

 bristly. Lateral segments of leaves 2-4 small, terminal loith truncate 

 or cuneate hase^ ovate-orbicular — Spring — Plain of Gennesaret 

 (Tristram, ) 



63. RAPISTRUM, Desv. Rapistrttm. 



Calyx spreading, somewhat bigibbous at base. Petals Fig. 49. 

 clawed, entire. Filaments toothless. Loment indehiscent ; 

 joints 1-celled ; the lower oblong or pedicelliform, marked 

 with sutures of indehiscent valves, seedless or with 1-2 

 pendulous seeds ; the uj^per ovoid-globular, beaked, with 

 1 erect seed — Tall, yellow-flowered herbs, 



R. rug^osum, L, © .3 to .6. Lower leaves lyrate ; 

 upper oblong, repand. Fruiting pedicels stiff, thickened, 

 as long as and narrower than the obconical lower joint of 

 loment ; upper joint marked with longitudinal crests ; 

 style as long as pod — Spring — Fields and roadsides, com- 

 mon throughout, 



Var. lougisityluni, Post. Style twice as long as 

 pod. 



Var. elavatuiu, Boiss. Lower joint often longer racemTof 

 than pedicel ; uj)per larger, nearly globular — PhcBnician Rapistrum 



coast. rugosura. 



64. DIDESMUS, DC. Didesmus. 



Calyx erect, somewhat bigibbous at base. Petals obovate, clawed. 

 Filaments free, toothless, Loments oblong, leathery, with indehiscent, 

 1 -seeded, generally angled and grooved joints, the terminal pyrami- 

 dal ; seeds globular, pendulous — Annual, white-flowered herbs, with 

 aspect of Myagrum and Erucaria. 



* Leaves not divided, or only the lowermost lyrate. 



1. I>. jEgyptius, L. Sparingly scabrous. Leaves olhng 

 oUuse, remotely dentate, or the lowermost lyrate. Joints of loment of 

 equal length, ovate 4-angled, the terminal longer than style — Spring 

 — Plain of Gennesaret, 



* * Leaves 1-%-pinnatisect. 



2. D. tenuifoliu§, Sibth. .3, scabrous. Leaves 

 jDinnatisect into short, linear, entire or dentate lobes. Joints 

 of loment equal in length andthicl-ness, ovate-tetragonal, the 

 terminal a little longer than ^tyle — Spring — Beirut, 

 'Aleih ; probably introduced, 



3. I>. ro§tratu§, Boiss, Papillose-puberulent, 

 Leaves bipinnatisect into shcu't, linear lobes, Loicer joint 

 of loment shorter, cylindrical, iqrper tlirice as thicl\ ovate- 

 pyramidal, as long as style — Spring — Palestine (Roth), 

 Jericho (Schlumberger). Beirut (Peyron) 



